1 689 979 924N 26.11.07 8917. Spare and wear partsThe test rollers, the driving chain, incandescence lamps and glowlamps as well as remote control batteries are wear parts.The test rollers are subject to wear and tear (like vehicle tires).iiiii Sand on the vehicle tires considerably shortens theservice life of the coating (grinding effect).Description Order number- Test rollers *) 1 686 624 xxxN- Driving chain 1 987 009 B62N- Batteries, type IEC LR03 (4x) Commercially available*) Depending on the brake test stand type and country-specificspecial designs, different test rollers are used. The exact ordernumbers for your test rollers must be identified by the Nuss-baum customer service.! Batteries are hazardous waste.They must be disposed of according to special regulations!